Applescript (in Xcode): set text in label (in window) to .....

Question

Hello,
How do you change the text of a label (in a window) in Xcode, with AppleScript?
I use Xcode, but inside my app I use Xcode. Applescript studio actually, only it's isn't called like that anymore.
It's also called applescriptobjc...
Example:
I have a label, containing the text "Hello" in my main window.
Next to it, is a button. I want that button connected to an applescript action, like:
on thebuttonclicked_(aNotification)
set thelabel1 to "Bye!"
end thebuttonclicked_
Please help,
Isaiah v. Hunen
P.S. Is there a way to also use the text of the label, like;
on thebuttonclicked_(aNotification)
display dialog thelabel1
end thebuttonclicked_

Answer 1

AppleScript Studio was deprecated in Snow Leopard - the new framework (AppleScriptObjC) is quite a bit different.  One of the main differences is the way that user interface objects are referred to.
Typically, in your project you would create an outlet property for the label and connect that to the UI item.  This outlet would then be used with the desired NSTextField methods (a label is just a text field that looks a little different).
property theLabel1 : missing value -- connect to the label text field
on thebuttonclicked_(aNotification)
  theLabel1's setStringValue_("Bye!")
  display dialog theLabel1's stringValue() as text
end thebuttonclicked_
Bindings can also be used to bind the value of the text field to a property.